וּֽשְׁמַֽעְיָ֤ה הַנָּבִיא֙ בָּ֣א אֶל־רְחַבְעָ֔ם וְשָׂרֵ֣י יְהוּדָ֔ה אֲשֶׁר־נֶאֶסְפ֥וּ אֶל־יְרוּשָׁלִַ֖ם מִפְּנֵ֣י שִׁישָׁ֑ק וַיֹּ֨אמֶר לָהֶ֜ם כֹּה־אָמַ֣ר יְהוָ֗ה אַתֶּם֙ עֲזַבְתֶּ֣ם אֹתִ֔י וְאַף־אֲנִ֛י עָזַ֥בְתִּי אֶתְכֶ֖ם בְּיַד־שִׁישָֽׁק׃
Now Shemaiah the prophet came to Rehoboam, and to the princes of Judah, that were gathered together to Jerusalem because of Shishak, and said unto them: ‘Thus saith the LORD: Ye have forsaken Me, therefore have I also left you in the hand of Shishak.’
Read Midrashic interpretations of II Chronicles 12:5: rabbinic exegesis from Bereshit Rabbah, Shemot Rabbah and classical Midrash sources, free.